I have a 2010 Mazda 3S, and recently the CEL, AT Light, and…

HI,I have a 2010 Mazda...

HI,I have a 2010 Mazda 3S, and recently the CEL, AT Light, and Trac Light all came on. The car jerked when I put it in reverse and was very sluggish in Drive (almost felt like if you ever started to drive a car in a higher gear).Anyways, towed it to the dealership and they said that the TCM (Transmission Control Module) was bad. The caveat was that they cannot just replace the TCM, since for the 2010 model year the TCM was installed inside the Transmission body, and it was a sealed transmission. So they would have to replace the entire transmission or they could let me get a new one and accept a trade for that one.This seems strange to me and am wondering if I'm getting ripped off by the dealership. I'm trying to find out if the TCM is truly inside the Transmission body and whether I would need to get the entire transmission changed out.Thanks,Andy

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.